an object weighing 15 newtons is lifted from the ground to a height of 0.22 meter. What is the approximate increase in the object's gravitational potential energy?
Time them together without 9.8
Multiply the two numbers. That will be the answer, in Joules
but what about gravity? Why not 15x9.81x.22?
15 N is mass *acceleration. In this case, acceleration= gravity.
To find the approximate increase in the object's gravitational potential energy, we need to first determine the change in height and then use the formula for gravitational potential energy.
The formula for gravitational potential energy is:
Gravitational potential energy = mass * acceleration due to gravity * height
Given that the object weighs 15 newtons, we can assume the mass to be 15 kg (since weight = mass * acceleration due to gravity, and the acceleration due to gravity is approximately 9.8 m/s^2).
Now, let's calculate the change in height. The question states that the object is lifted to a height of 0.22 meters. Since we are interested in the increase, we can assume the initial height is zero (since the object is lifted from the ground).
Therefore, the change in height is 0.22 meters.
Now, substituting the values into the formula:
Gravitational potential energy = mass * acceleration due to gravity * height
= 15 kg * 9.8 m/s^2 * 0.22 meters
Calculating this equation will give us the approximate increase in the object's gravitational potential energy.